Earbuds / Compare

Ozlo Sleepbuds 2 vs soundcore Liberty Buds 2

A

Product A: Ozlo

Sleepbuds 2

52 of 166 known

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B

Product B: soundcore

Liberty Buds 2

86 of 166 known

Change soundcore Liberty Buds 2

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All 166 fields

Every value links to where we found it.

Only differences

AOzlo Sleepbuds 2

Bsoundcore Liberty Buds 2

General

6 of 8 differ

Series

Sleepbuds1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026The product page and its user guide pages call the line Sleepbuds. The first generation is the Ozlo Sleepbuds.

Liberty1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Maker line name Liberty. The product is named Anker soundcore Liberty Buds 2 and shows as Anker Liberty Buds 2 over Bluetooth.

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

010021C01WW012Maker product pageozlosleep.com/products/sleepbuds.jsRead 15 October 2026US store product data: SKU 010021C01WW01, a single variant.

D1206, D1206ZQ1, D1206Z21, D1206Z11, D1206GQ1, D1206G21, D1206G112Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-calls.jsRead 20 October 2026D1206 is the model in the manual. US store SKUs are D1206ZQ1 Mother of Pearl Version, D1206Z21 Silver White and D1206Z11 Glossy Black. The UK and EU stores list D1206GQ1, D1206G21 and D1206G11 for the same barcodes.

GTIN / EAN

8500709611652Maker product pageozlosleep.com/products/sleepbuds.jsRead 15 October 2026US store barcode field: 850070961165. The Europe and UK store feeds list the same SKU and barcode.

194644348724, 194644366193, 1946443655612Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-calls.jsRead 20 October 2026Barcodes of the three US variants. Each is a valid UPC-A number and the UK and EU stores list the same barcodes.

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

28 July 20263Press articlesoundguys.com/ozlo-sleepbuds-2-launch-160755Read 15 October 2026The Tom's Guide launch review is dated 28 July 2026 and says the Sleepbuds 2 launch today.4Reviewtomsguide.com/wellness/sleep-tech/ozlo-sleepbuds-2Read 15 October 2026Published 28 July 2026: the Sleepbuds 2 launch today.7Press articletechcrunch.com/2026/07/28/ozlos-sleepbuds-2-build-on-boses-sleep-earbud-legacyRead 15 October 2026Unveiled on Tuesday 28 July 2026.

3 September 202614Press articletechradar.com/audio/earbuds-airpods/my-favorite-earbuds-of-the-year-just-got-an-open-ear-makeover-as-this-top-cheap-headphone-brand-debuts-7-new-modelsRead 20 October 2026Article of 3 September 2026 reports the Liberty Buds 2 among the products unveiled at IFA 2026.

Status

Available2Maker product pageozlosleep.com/products/sleepbuds.jsRead 15 October 2026US store lists the product as available on 2026-10-15.

Available2Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-calls.jsRead 20 October 2026US store product feed lists all three colours as available on the access date.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$2791Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026The US store lists 279 USD with a free sleep mask for a limited time. SoundGuys news and the Tom's Guide launch review give the 279 USD launch price.3Press articlesoundguys.com/ozlo-sleepbuds-2-launch-160755Read 15 October 2026SoundGuys news, 29 Jul 2026: Ozlo Sleepbuds 2, a 279 USD pair.4Reviewtomsguide.com/wellness/sleep-tech/ozlo-sleepbuds-2Read 15 October 2026Review: launching with a sale price of 279 USD.7Press articletechcrunch.com/2026/07/28/ozlos-sleepbuds-2-build-on-boses-sleep-earbud-legacyRead 15 October 2026TechCrunch, 28 Jul 2026: priced at 279 USD, 30 USD above the original Sleepbuds. A sleep mask and travel case come with a purchase for a limited time.

$129.991Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026US store price is $129.99. TechRadar reports $129.99 at launch.14Press articletechradar.com/audio/earbuds-airpods/my-favorite-earbuds-of-the-year-just-got-an-open-ear-makeover-as-this-top-cheap-headphone-brand-debuts-7-new-modelsRead 20 October 2026Sells for $129.99 and 129.99 GBP.

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

Not available

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

US, EU, GB1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026US store plus Europe (ozlosleep.eu) and UK (ozlosleep.co.uk) stores. Documented subset. The warranty is 1 year in the US and 2 years in the EU and UK. No euro or pound launch price is stored, since only current store prices were found.

US, GB, EU2Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-calls.jsRead 20 October 2026US, UK and EU soundcore stores all sell Liberty Buds 2.

ColoursiThe maker's own colour names

Not available

Mother of Pearl Version, Silver White, Glossy Black1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026US store colour names, verbatim.

Segment

Sleep1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Maker: sleep earbuds, designed for sleep only.

Music1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Listed in the soundcore Liberty true wireless line. The page title says earbuds for calls, but the line is the music line, so music is stored.

Design

0 of 4 differ

Form factoriIn-ear seals the ear canal with a tip. Semi-in-ear rests in the outer ear without a seal. Open-ear leaves the ear canal unobstructed.

In-ear1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Passive noise cancellation via silicone tips (not ANC). The silicone tips seal the ear.5Reviewsoundguys.com/ozlo-sleepbuds-2-review-161143Read 15 October 2026Review: passive isolation depends on how well the silicone tips seal in your ears.

In-ear1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026In-ear earbuds with ear tips that seal the ear canal.

Bud shapeiStem describes an extending control or microphone stalk. Stemless describes a compact body without a stalk.

Stemless1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026The earbuds are a small low-profile body with no stalk, as shown on the product page. A silicone tip with a wing carries each body.

Stemless1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Maker image and TechRadar describe lightweight earbuds without long stems.14Press articletechradar.com/audio/earbuds-airpods/my-favorite-earbuds-of-the-year-just-got-an-open-ear-makeover-as-this-top-cheap-headphone-brand-debuts-7-new-modelsRead 20 October 2026Lightweight, without long stems.

Use one bud aloneiWhich earbud can operate alone. This does not mean two earbuds can play from different sources.

Not available

Not available

RGB lighting

Not available

Not available

Drivers and sound

9 of 17 differ

Drivers per budiAudio transducers in one earbud. Rows distinguish their type, acoustic role and published diameter. Do not count microphones.

AOzlo Sleepbuds 2

Type
Balanced armature

Source16Press articleaudioxpress.com/news/ozlo-launches-sleepbuds-2-expanding-sleep-earbuds-as-a-specialized-audio-categoryRead 21 October 2026Same sentence names one new balanced armature driver. No count, role or size is stated, so only the type is stored.

Bsoundcore Liberty Buds 2

Diameter (mm)	Count per earbud
9.2	1

Source3Maker product pageuk.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-calls.jsRead 20 October 2026UK page text: a single 9.2 mm PU + LCP composite diaphragm driver. The manual lists a 9.2 mm driver unit. The driver type is not stated.4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: Driver Unit 9.2 mm. One driver per bud is taken from the single diaphragm in the product text.

Driver typeiPublished transducer technology. High-excursion, composite and neodymium do not by themselves establish a driver type.

Balanced armature16Press articleaudioxpress.com/news/ozlo-launches-sleepbuds-2-expanding-sleep-earbuds-as-a-specialized-audio-categoryRead 21 October 2026audioXpress, launch news: Ozlo says Sleepbuds 2 use a super-efficient custom audio amplifier paired with a new balanced armature driver. The maker product page, help center and press release name an amplifier but no driver type.

Not available

Driver sizeiLargest explicitly published circular driver diameter in one earbud. A rectangular driver width is not a diameter.

Not available

9.2mm=CalculatedFrom Drivers per bud

Drivers per budiTotal audio transducers in one earbud, summed from explicit driver quantities. A row with an unknown quantity makes the total unknown.

Not available

1=CalculatedFrom Drivers per bud

Diaphragm material

Not available

PU + LCP composite1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026US and EU page text: a single PU + LCP composite diaphragm. The US page meta description and TechRadar say wool-paper drivers, which does not match the page text.

Frequency responseiPublished acoustic frequency response of the earbuds. Codec transmission bandwidth alone does not qualify. Conditions belong in the source note.

Not available

Min20 HzMax20 kHz4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: 20Hz - 20kHz. No measurement conditions given.

Impedance

Not available

16Ω4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: 16 ohm.

SensitivityiPublished acoustic sensitivity. The electrical reference and frequency must be stated in sensitivity_reference or the source note.

Not available

Not available

Sensitivity reference

Not available

Not available

Max sample rateiHighest supported audio sample rate under the codec and source-device conditions in the source note. This does not establish lossless playback.

Not available

Not available

Max bit depthiHighest supported audio bit depth under the codec and source-device conditions in the source note. Bluetooth version alone does not establish this.

Not available

Not available

Adaptive EQiAn inner mic tunes the sound to your ear in real time

Not available

Not available

Personalised soundiA profile from a hearing test or ear scan

Not available

Yes1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026HearID 5.0 analyzes the hearing profile.

Onboard EQ

Not available

Not available

Custom EQ bandsiNumber of independently adjustable custom equalizer frequency bands. Availability may require current firmware, an app or a compatible device.

Not available

Not available

EQ presetsiNamed equalizer sound presets. Noise-control modes and spatial-audio modes are separate features.

Balance, Focus, Spoken Word, Airplane Mode4Reviewtomsguide.com/wellness/sleep-tech/ozlo-sleepbuds-2Read 15 October 2026Audio Tuning profiles in the app: Balance, Focus, Spoken Word and Airplane Mode. Ozlo calls this tuning. It changes the audio for the content or the setting.

Anker Signature, Clear Vocals, Powerful Bass, Calm and Soothing, Anker Balanced4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Sound effects section lists five presets. Custom EQ can also be created. The number of custom bands is not stated.12Maker product pageservice.soundcore.com/article-description/How-to-Improve-Sound-Quality-on-Anker-Liberty-Buds-2Read 20 October 2026Curated Sound Effects are found under HearID in the app. A custom EQ curve can be built from the same menu.

Volume limit

Not available

Not available

Spatial audio

2 of 2 differ

Spatial audioiNamed spatial or surround audio processing supported with the source and platform conditions stated in the source note.

Not available

Dolby Audio4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Dolby Audio, Music Mode, a fixed spatial audio effect. The battery FAQ calls it Dolby Atmos.

Head trackingiSpatial audio changes with head movement. Static spatial processing alone does not qualify. Compatible device or content requirements belong in the source note.

Not available

No4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026The manual describes a fixed spatial audio effect, so there is no head tracking.

Noise cancelling

5 of 11 differ

Active noise cancelling

No1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Tech specs, Noise Masking: passive noise cancellation via silicone tips (not ANC). FAQ: block and replace noise masking is different from active noise cancellation.

Yes1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Product text: 6-sensor full-band ANC system with Anker Thus AI chip. The listing images also show Adaptive ANC 4.0.

ANC typeiFeedforward uses exterior microphones. Feedback uses interior microphones. Hybrid uses both. Adaptive control is separate from microphone placement.

Not available

Not available

ANC microphones in both earbudsiPhysical microphones used by ANC across the pair. A shared call and ANC microphone counts once. Case microphones and vibration sensors are excluded.

Not available

Not available

Adaptive ANCiANC strength or calibration adjusts automatically to noise, fit or ear acoustics. The source note states the adjustment conditions.

Not available

Yes1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Listing images show Adaptive ANC 4.0 and the manual describes ear-canal adaptive ANC that adjusts to the ear shape.7Maker product pageservice.soundcore.com/article-description/How-to-Choose-the-Right-Ambient-Sound-Mode-on-Anker-Liberty-Buds-2Read 20 October 2026Adaptive Mode adjusts to the environment, towards Transparency in quiet places and towards stronger ANC in loud ones.

ANC levelsiNumber of selectable ANC strength levels. Excludes ANC off, transparency and activity profiles unless they explicitly set distinct strength levels.

Not available

54Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Ambient sound section: Noise Cancellation Level 1 to 5. The FAQ groups them as Natural levels 1 to 4 and Deep level 5.7Maker product pageservice.soundcore.com/article-description/How-to-Choose-the-Right-Ambient-Sound-Mode-on-Anker-Liberty-Buds-2Read 20 October 2026Noise Cancellation has five levels, Natural 1 to 4 and Deep 5.

ANC attenuation (claimed)iManufacturer maximum claimed noise attenuation. Frequency and measurement conditions belong in the source note. This is not reviewer-measured overall attenuation.

Not available

Not available

Transparency mode

No8Press articlethe-gadgeteer.com/2026/07/29/ozlo-sleepbuds-2-sleep-earbudsRead 15 October 2026Article of 29 Jul 2026: no microphone array, no transparency mode and no calls. The earbuds have no microphones, so a transparency mode cannot exist.

Yes4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Ambient sound section lists Transparency.7Maker product pageservice.soundcore.com/article-description/How-to-Choose-the-Right-Ambient-Sound-Mode-on-Anker-Liberty-Buds-2Read 20 October 2026

Adjustable transparency

Not available

Not available

Automatic ANC and transparency blendiAutomatically blends active cancellation with ambient sound. Automatic activity-based switching between separate modes alone does not qualify.

Not available

Not available

Conversation detection

Not available

Not available

Wind noise reductioniA documented physical design or processing feature for reducing wind noise. The source note distinguishes mesh or shape changes from selectable processing.

Not available

Yes15Reviewscarbir.com/tws/anker-liberty-buds-2-reviewRead 20 October 2026The app has a Wind Noise Reduction switch. The default ANC can let in a bit of wind noise. This is a selectable processing feature.

Measured

3 of 23 differ

Frequency response notes (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Bass amount (measured)iDeviation from the review source target in the bass range. Positive means more bass. Target, test method and settings belong in the source note.

Not available

Not available

Treble amount (measured)iDeviation from the review source target in the treble range. Positive means more treble. Values from different targets may not be directly comparable.

Not available

Not available

Deviation from target (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Consistency between fittings (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Harmonic distortion (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Sound leakage (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Noise isolation (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Noise isolation, best (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Passive isolation (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Call quality notes (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Scarbir reports clear, natural calls in noise, including wind. Sudden sounds such as laughter or a toilet flush are inaudible to the caller. Vehicle acceleration and door slams can add a brief metallic edge. The line can turn metallic with small hiccups when the earbuds are connected to two devices and one goes out of range. Bought by the reviewer. Firmware is not stated.15Reviewscarbir.com/tws/anker-liberty-buds-2-reviewRead 20 October 2026Review text on call quality in noise and wind. No numbers are stored.

Mic low-frequency extension (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Mic high-frequency extension (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Mic speech-to-noise ratio (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Latency (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Bluetooth latency, worst (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

2.4 GHz latency, worst (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Latency in game mode (measured)iThe best case the buds can reach. Measured by a reviewer

Not available

Not available

Battery life (measured)iReviewer-tested operation from one full charge of the earbuds. Excludes case recharges. ANC, codec, connection, volume and tested edition belong in the row or source note.

AOzlo Sleepbuds 2

Not available

Bsoundcore Liberty Buds 2

ANC	Hours (h)
Yes	7

Source15Reviewscarbir.com/tws/anker-liberty-buds-2-reviewRead 20 October 2026Review of 9 October 2026 says battery life on a single charge comes in at 7 hours with music and ANC on. The reviewer bought the earbuds. Volume, codec and firmware are not stated. Without music and with ANC on the reviewer got a bit over 8 hours.

Longest tested use per chargeiHighest earbuds-only duration among stored reviewer tests. Modes and settings may differ between tests and products.

Not available

7h=CalculatedFrom Battery life (measured)

Battery life with case (measured)iReviewer-tested total including earbuds and case recharges. Do not calculate this by multiplying one-charge runtime by claimed recharge count.

Not available

Not available

Full charge time (measured)iBuds in the case, 0 to 100 %. Measured by a reviewer

Not available

Not available

Weight per bud (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Microphones and calls

5 of 7 differ

Voice microphones in both earbudsiPhysical call and beamforming microphones across the pair. Excludes case microphones and vibration sensors. Shared ANC microphones can also count here when used for calls.

01Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Tech specs: No microphone, designed for sleep only. FAQ: there is no microphone in the Sleepbuds to support phone calls.

61Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Product text: 8 sensors, 3 mics + 1 bone-conduction sensor per bud. That is 6 microphones across the pair. The 6-sensor ANC system and the call microphones are the same physical microphones as far as the text says.

All microphones in both earbudsiEvery physical microphone across the pair, including call and ANC microphones. Shared microphones count once. Excludes the charging case and voice vibration sensors.

01Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026No microphone in the earbuds. The Smart Case has a microphone that only measures room noise. The case is excluded from this count.

61Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 20263 microphones per bud, 6 in total. The bone-conduction sensors are not microphones and are excluded.

Bone conduction voice sensoriA dedicated bone or jaw conduction sensor for detecting speech vibrations. A microphone or speech-detecting accelerometer alone does not prove this architecture.

Not available

Yes1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 20261 bone-conduction sensor per bud.

Mic noise reduction

Not available

AI1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Thus AI isolates the speech from the background on calls.

Call audio bandwidthiHighest supported call-audio bandwidth. Compatible phone, operating system, call app or network requirements belong in the source note.

Not available

Not available

Mic mute controliAn earbud control that mutes the microphone during calls. Includes touch or pressure gestures and physical buttons. Phone/app-only controls do not qualify.

Not available

No15Reviewscarbir.com/tws/anker-liberty-buds-2-reviewRead 20 October 2026Review says there is no mute button like on the Liberty 5.

SidetoneiHear your own voice in calls

Not available

Not available

Connectivity

9 of 18 differ

Chip

Not available

ANKER Thus AI1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Powered by Anker Thus AI Chip. The page says World's First refers to NOR Flash CIM chips and 150 times computing power is against the previous flagship earbud chip.

Connections

Bluetooth1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Bluetooth only. The Smart Case connects to the phone over Bluetooth Classic.

Bluetooth4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Compliance section: open ports are Classic Bluetooth and BLE. There is no 2.4 GHz or wired mode.

Bluetooth

5.31Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Connection section: Bluetooth 5.3 radios.

6.14Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: Bluetooth Version 6.1.

Bluetooth codecs

Not available

SBC, AAC, LDAC5Maker product pageservice.soundcore.com/product-description/a08e200000d1QBkAAMRead 20 October 2026Supported Bluetooth Codec: AAC, SBC, LDAC. The manual says LDAC runs at 660 kbps in its battery test. Scarbir also lists AAC and LDAC.

Bluetooth profiles

A2DP1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Connectivity: Bluetooth 5.3 (A2DP + Low Energy Audio). Only A2DP is named as an audio profile.

Not available

LE Audio

Yes1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Connectivity: Bluetooth 5.3 radios supporting A2DP and Low Energy Audio (LEA) enabled streaming. No independent test of LE Audio was found.

Not available

Auracast

Not available

Not available

MultipointiConcurrent Bluetooth connections to multiple source devices. Pairing memory and switching through a manufacturer account alone do not qualify.

No5Reviewsoundguys.com/ozlo-sleepbuds-2-review-161143Read 15 October 2026Review cons: no Bluetooth multipoint. The buds can only connect to one device at a time. Firmware 02.11.2606011.

Yes4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Dual Connections is enabled by default. Two Bluetooth devices at the same time.

Multipoint devicesiMaximum source devices concurrently connected by Bluetooth, not the number remembered in pairing history.

Not available

24Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Two Bluetooth devices at the same time.

Multipoint with LDACiMany buds turn multipoint off on LDAC

Not available

Not available

Paired devices rememberediMaximum remembered Bluetooth source pairings. This is separate from simultaneous multipoint connections.

Not available

Not available

Automatic switching between own devicesiThrough the maker's account

Not available

Not available

Fast pairing

Not available

Google Fast Pair4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Google Fast Pair on Android 6.0 or later.

Audio sharingiShare one stream with a second pair

Not available

Not available

Wireless range (claimed)

Not available

10m4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: 10m (32ft).

Wireless receiveri2.4 GHz dongle

Not available

Not available

Receiver connector

Not available

Not available

Simultaneous 2.4 GHz and Bluetooth audioiBoth connection types can play audio together. Quick switching between independent modes does not qualify.

Not available

Not available

Latency

1 of 3 differ

Low latency mode

Not available

Yes10Maker product pageservice.soundcore.com/article-description/How-to-Get-a-More-Stable-Connection-and-Lower-Latency-on-Anker-Liberty-Buds-2Read 20 October 2026Game Mode in the app is built to minimize delay. No latency figure is published.

Claimed latency

Not available

Not available

Lowest claimed latency

Not available

Not available

Compatibility

3 of 4 differ

PlatformsiPlatforms with documented audio support. App availability and advanced features can be more limited. Edition-specific support is listed in variants.

Android, iOS1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026The page lists streaming from any Bluetooth source and the Ozlo Sleep app for iOS and Android.

Android, iOS, Windows, macOS11Maker product pageservice.soundcore.com/article-description/How-to-Use-Anker-Liberty-Buds-2-for-Music-and-Calls-on-Windows-and-MacRead 20 October 2026The maker documents Windows and Mac use for music and calls. Android needs 6.0 or later for Fast Pair and the app. The app needs iOS 13 or later.

Connection per platformiDocumented audio connection for each platform. USB-C phone routes require a compatible port. Platform edition and microphone restrictions belong in source notes or feature requirements.

AOzlo Sleepbuds 2

Not available

Bsoundcore Liberty Buds 2

Platform	Connection	Microphone works
Android	Bluetooth	Not available
iOS	Bluetooth	Not available
Windows	Bluetooth	Yes
macOS	Bluetooth	Yes

Source11Maker product pageservice.soundcore.com/article-description/How-to-Use-Anker-Liberty-Buds-2-for-Music-and-Calls-on-Windows-and-MacRead 20 October 2026Windows lists Stereo for music and Hands-Free for calls with the microphone. Mac uses one device for input and output. Phone microphone use is not stated per platform.

Features that need a specific deviceiDevice, operating system, firmware, codec, content, account or region requirements for a named feature.

AOzlo Sleepbuds 2

Feature	Needs
Setup and audio streaming	A phone and an active Bluetooth connection are needed to set up the earbuds and to stream audio. The earbuds connect to the Smart Case and the Smart Case connects to the phone.
Ozlo Sleep app	Android 12 or later. The product page says iOS 17 or later on iPhone and iPad. The help center says iOS 18 or later on iPhone and iPad.
Phone-free Sleep Sound	The earbuds can start the built-in Sleep Sound when taken out of the case, with no phone or Bluetooth connection. This is set up in the app.
In-ear alarm	Set in the Ozlo app. It works without a phone connection and in Bluetooth Disabled mode.
Battery test	Ozlo test with streaming audio and Sleep Sounds at 50 percent volume.

Source1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026FAQ and System Requirements sections.10Maker product pageozlo-sleepbuds-2.gorgias.help/en-US/what-are-the-app-requirements-7597631Read 21 October 2026Help center, What are the app requirements: iOS 18 or later on iPhone and iPad, Android 12 or later on phones. The product page FAQ says iOS 17 or later. Both are kept in the requirement text, since the maker documents disagree. The App Content and Sound Library Specs article says iOS 18 or later and Android 12 or later.

Bsoundcore Liberty Buds 2

Feature	Needs
LDAC	Enable Preferred Audio Quality in the soundcore app on a device with Android 8.0 or later. LDAC is not available on iPhone. LDAC cannot run together with Dolby Audio or Game Mode. Samsung phones also need the LDAC toggle in phone settings.
Dolby Audio	Turn on in the soundcore app. It cannot run together with EQ, LDAC or Game Mode. The effect is a fixed spatial audio effect.
Game Mode	Turn on in the soundcore app. It cannot run together with EQ, LDAC or Dolby Audio.
HearID	Sign in to a soundcore account in the app, then take the HearID sound test. Results are saved and applied automatically.
AI translation	Needs the soundcore app and a connected phone. Turn off Dual Connections first.
Change ANC mode during a call	Update the earbuds to the latest firmware.
Voice assistant	Not assigned by default. Assign the phone's voice assistant to a double press, triple press or long press in the app. A single tap cannot be assigned.
Fast charging	The earbuds must be fully depleted before a 10 minute charge gives up to 4 hours of playback.

Source4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026LDAC and Dolby notes from the manual. Calls and ANC mode change need current firmware. Real-time translation needs Dual Connections off.12Maker product pageservice.soundcore.com/article-description/How-to-Improve-Sound-Quality-on-Anker-Liberty-Buds-2Read 20 October 2026Dolby Audio, EQ, LDAC and Game Mode cannot run together. LDAC is not available on iPhone.

Official licence

Not available

Not available

Battery and charging

12 of 13 differ

Battery per budiBattery cell capacity of one earbud. The source note states typical or rated capacity. Charging input current is not capacity.

Not available

60mAh4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: 60mAh x 2 (Earbuds). Stored as one earbud. Typical versus rated is not stated.

User-replaceable earbud batteryiThe maker documents normal battery replacement by the user with its approved procedure and tools. Service or recycling disassembly does not count.

Not available

Not available

Claimed battery lifeiManufacturer maximum runtime under the stated mode, codec and spatial processing state. Name the spatial or immersive processing mode and other conditions in source notes. Omit unspecified settings. with_case false means one charge of the earbuds. true means earbuds plus case recharges.

AOzlo Sleepbuds 2

Mode	Includes case recharges	Hours (h)
ANC off	No	14

Source1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Up to 14 hours on a single charge. Footnote: Ozlo testing with Sleepbuds 2 playing streaming audio and Sleep Sounds at 50 percent volume. Results with other audio, volume, Bluetooth use and features vary. No codec is named. The case claim is stored as charging guidance because the maker gives only a number of recharges.

Bsoundcore Liberty Buds 2

Mode	Codec	Spatial audio	Includes case recharges	Hours (h)
ANC off	Not available	Not available	No	12
ANC off	Not available	Not available	Yes	46
ANC on	Not available	Not available	No	7
ANC on	Not available	Not available	Yes	27
Transparency	Not available	Not available	No	7
Transparency	Not available	Not available	Yes	27
ANC on	LDAC	Not available	No	4.5
ANC on	LDAC	Not available	Yes	17.5
ANC on	Not available	Yes	No	4
ANC on	Not available	Yes	Yes	15.5
Call	Not available	Not available	No	4
Call	Not available	Not available	Yes	15.5

Source4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Manual lists Normal mode 12 / 46 hours, ANC On / Transparency 7 / 27, ANC + LDAC (660 kbps) 4.5 / 17.5 and ANC + Calling 4 / 15.5. The first number is the earbuds and the second is with the charging case. The FAQ states testing at room temperature, factory settings and 50% volume in music mode, and adds Dolby Atmos with ANC on at 4 / 15.5 hours. The call rows are with ANC on. Adaptive mode is 7 / 27 hours in the FAQ and is not stored.6Maker product pageservice.soundcore.com/article-description/How-Long-the-Battery-Lasts-on-Anker-Liberty-Buds-2-in-Each-ModeRead 20 October 2026Playtime by mode, earbuds only and with the charging case. Testing at room temperature with factory settings, 50% volume and music mode.

Longest claimed use per chargeiHighest earbuds-only runtime among all stored modes. This can be ANC off, Hearing Aid, heart-rate or call use. Read the battery table and source conditions.

14h=CalculatedFrom Claimed battery life

12h=CalculatedFrom Claimed battery life

Playback per charge with ANC (claimed)iHighest claimed earbuds-only playback with ANC enabled. Codec and spatial-audio conditions belong in the source note.

Not available

7h=CalculatedFrom Claimed battery life

Playback per charge without ANC (claimed)iHighest claimed earbuds-only playback with ANC disabled. Codec and volume conditions belong in the source note.

14h=CalculatedFrom Claimed battery life

12h=CalculatedFrom Claimed battery life

Total with case (claimed)iHighest claimed runtime including the initial earbud charge and all case recharges. It is not the case recharge runtime alone.

Not available

46h=CalculatedFrom Claimed battery life

Total with case and ANC (claimed)iClaimed total playback with ANC, including the initial earbud charge and case recharges.

Not available

27h=CalculatedFrom Claimed battery life

Talk time (claimed)

Not available

4h=CalculatedFrom Claimed battery life

Full charge time, budsiTime to charge discharged earbuds to full in the case. Excludes charging the case itself or a combined buds-and-case result.

180min9Maker product pageozlo-sleepbuds-2.gorgias.help/en-US/battery-and-charging-specs-7597612Read 21 October 2026Ozlo Sleepbuds 2 help center, Battery & Charging Specs: Sleepbuds full charge approximately 3 hours. The article How long do Sleepbuds 2 take to charge gives the same figure. The Sleepbuds charge only in the Smart Case. Maker estimate, not a measurement.

60min4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: Full Charging Time for Earbuds 1 Hour. The FAQ says under 1 hour.8Maker product pageservice.soundcore.com/article-description/What-Should-I-Do-If-My-Anker-Liberty-Buds-2-Has-Charging-IssuesRead 20 October 2026Earbuds: less than 1 hour for a full charge.

Charging guidanceiPublished charging guidance or estimates that do not separate earbuds and case. Preserve the maker’s component scope and limits. Do not assign an unspecified or combined estimate to a component-specific numeric field.

The Smart Case holds an additional 2 to 3 charges for the earbuds. The maker gives no total runtime with the case.1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Battery section: the Smart Case holds an additional 2-3 charges. SoundGuys measured roughly three to four recharges.5Reviewsoundguys.com/ozlo-sleepbuds-2-review-161143Read 15 October 2026Review: after streaming for eight hours about 30 percent was left, and the case adds roughly three to four full recharges.

The manual and the FAQ give under 1 hour for the earbuds, 3 hours for the case by cable and 4 hours for the case by wireless charging. The FAQ says the case figures are with the earbuds inside and the manual says the 3 hour cable figure is with the earbuds removed. Input is 5 V 1 A and the maker recommends a 5 V 1 A charger. Wireless charging does not work with watch chargers.4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: input 5 V 1 A, wireless charging time for the earbuds 4 hours.8Maker product pageservice.soundcore.com/article-description/What-Should-I-Do-If-My-Anker-Liberty-Buds-2-Has-Charging-IssuesRead 20 October 2026Charging works between 0 and 45 C. The FAQ recommends a 5 V 1 A charger.

Quick charge timeiCharge duration corresponding to quick_charge_playback_h. Source note states earbuds-only or case-inclusive charging and playback settings.

Not available

10min6Maker product pageservice.soundcore.com/article-description/How-Long-the-Battery-Lasts-on-Anker-Liberty-Buds-2-in-Each-ModeRead 20 October 202610 minutes of charging gives up to 4 hours of playback in Normal Mode, from fully depleted earbuds.8Maker product pageservice.soundcore.com/article-description/What-Should-I-Do-If-My-Anker-Liberty-Buds-2-Has-Charging-IssuesRead 20 October 2026Fast charging: 10 minutes gives up to 4 hours of playback in Normal Mode.

Earbud playback after quick chargeiEarbuds-only runtime after quick_charge_min of charging. A claimed case-inclusive total does not qualify. ANC, codec and volume conditions belong in the source note.

Not available

4h6Maker product pageservice.soundcore.com/article-description/How-Long-the-Battery-Lasts-on-Anker-Liberty-Buds-2-in-Each-ModeRead 20 October 2026Earbuds-only playback in Normal Mode. The earbuds must be fully depleted first. Codec and volume are not stated.8Maker product pageservice.soundcore.com/article-description/What-Should-I-Do-If-My-Anker-Liberty-Buds-2-Has-Charging-IssuesRead 20 October 2026The earbuds must be fully depleted before fast charging is used.

Charging case

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Case batteryiCharging-case battery cell capacity. The source note distinguishes typical, rated and output capacity. USB output capacity alone does not qualify.

Not available

580mAh4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: 580mAh (Charging Case). Typical versus rated is not stated.

User-replaceable case batteryiThe maker documents normal case battery replacement by the user with its approved procedure and tools. Service or recycling disassembly does not count.

Not available

Not available

Case charging port

USB-C1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Charges via USB-C. The charging cable is in the box.

USB-C4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026USB-C Charging Port.

Case full charge timeiBy cable, 0 to 100 %. A time the maker gives with the earbuds inside the case counts, and the source note says so.

150min9Maker product pageozlo-sleepbuds-2.gorgias.help/en-US/battery-and-charging-specs-7597612Read 21 October 2026Same article: Smart Case full charge about 2.5 hours under normal conditions, by USB-C. The user guide pages written for the original Sleepbuds say up to 8 hours with the Sleepbuds outside the case, so the Sleepbuds 2 help center figure is used.

180min4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: Full Charging Time for Charging Case (Wired Charging) 3 Hours. The charging section says recharging the case with the earbuds removed takes 3 hours via cable. The FAQ says under 3 hours with the earbuds inside. Stored as 180 minutes.8Maker product pageservice.soundcore.com/article-description/What-Should-I-Do-If-My-Anker-Liberty-Buds-2-Has-Charging-IssuesRead 20 October 2026Charging case wired: less than 3 hours with the earbuds inside.

Wireless charging

No1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026FAQ: Does the Smart Case support wireless charging? No.5Reviewsoundguys.com/ozlo-sleepbuds-2-review-161143Read 15 October 2026Review cons: the case charges over USB-C only and has no wireless charging.

Yes4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026The charging section says to place the case on a wireless charger for wireless charging.

Wireless standardsiDocumented case charging standards or supported chargers. Magnetic alignment alone does not establish Qi2 certification.

Not available

Qi8Maker product pageservice.soundcore.com/article-description/What-Should-I-Do-If-My-Anker-Liberty-Buds-2-Has-Charging-IssuesRead 20 October 2026Charging case wireless: standard Qi. Watch chargers are not supported.

Wireless charging poweriHighest wireless charging input the maker states for the case. The output of a charging pad does not count.

Not available

Not available

Speaker in caseiAn audio speaker physically in the charging case, for locating or status sounds. A microphone in the case is separate.

Not available

Not available

Screen on case

Not available

Not available

Case works as audio transmitteriCase relays external source audio through USB or an analog audio input. A case microphone for recording or calls does not qualify.

Not available

Not available

Controls

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ControlsiPressure is a force sensor that does not move, such as a stem you squeeze. Button is a key that moves when pressed.

Not available

Touch4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Touch Control Area on each earbud.

Earbud volume controliHow earbud controls adjust volume, including a voice command if supported. Phone or app controls alone do not qualify.

None4Reviewtomsguide.com/wellness/sleep-tech/ozlo-sleepbuds-2Read 15 October 2026Review, App and controls: in the app you can select the soundscape, set the in-ear alarm, adjust the volume or change the Sleep Mode. No earbud controls are described.11Maker product pageozlo-sleepbuds-2.gorgias.help/en-US/what-are-the-specific-differences-between-the-original-sleepbuds-and-sleepbuds-2-7597351Read 21 October 2026Help center comparison table, Phone-Free Controls: the original Sleepbuds need the Ozlo app. Sleepbuds 2 add a multifunction button on the Smart Case for pairing and playback control. No control on the earbuds is documented, and the maker hardware overview lists none. Volume is set in the Ozlo app. The Smart Case button has no volume function.

Not available

Gestures

Not available

Double tap right earbud: play or pause (single earbud: double tap), Double tap left earbud: next track, Double tap either earbud: answer or end a call, Hold either earbud for 2 seconds: reject an incoming call or change ANC mode during a call, Hold either earbud for 2 seconds: switch between ANC and Transparency modes, Hold both earbuds for 3 seconds: enter pairing mode for a second device4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Controls table for dual earbuds and single earbud use. A case button is separate.

Remappable controls

Not available

Yes9Maker product pageservice.soundcore.com/article-description/How-to-Improve-Call-Quality-on-Anker-Liberty-Buds-2Read 20 October 2026The app Controls page assigns functions to touch gestures. Scarbir says single tap, double tap, triple tap and hold can be fully customized.

Voice assistant

Not available

Phone's voice assistant9Maker product pageservice.soundcore.com/article-description/How-to-Improve-Call-Quality-on-Anker-Liberty-Buds-2Read 20 October 2026Touch controls are not assigned to the voice assistant by default. In the app, Controls lets you assign the phone's voice assistant to a double press, triple press or long press.

Sensors and health

5 of 9 differ

In-ear detection

Not available

Yes15Reviewscarbir.com/tws/anker-liberty-buds-2-reviewRead 20 October 2026The app can turn off automatic pausing when you take an earbud out.

Sensors

Sleep-detecting accelerometer in the earbuds, Ambient noise detection in the Smart Case, Ambient temperature sensor in the Smart Case, Ambient light sensor in the Smart Case1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Sensors section: Smart Case button, ambient noise detection, ambient temperature sensor and ambient light sensor. Sleepbuds: sleep-detecting accelerometer.

Not available

Heart rate sensor

Not available

Not available

Skin temperature sensingiA documented skin temperature sensor. This is separate from the operating temperature range or a heart-rate sensor.

Not available

Not available

Hearing aid featureiAmplification for mild to moderate hearing loss

Not available

Not available

Medical clearances

Not available

Not available

Hearing testiA documented hearing assessment feature, including consumer sound-personalization tests. Medical diagnostic clearance must be stated separately.

Not available

Yes4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026HearID analyzes the hearing sensitivity at different frequencies with a test in the app. This is a consumer sound test and not a medical test.

Hearing protectioniLimits sudden loud sounds

Not available

Yes7Maker product pageservice.soundcore.com/article-description/How-to-Choose-the-Right-Ambient-Sound-Mode-on-Anker-Liberty-Buds-2Read 20 October 2026Smart Hearing Protection steps in automatically when a sudden loud sound occurs, under Home > Transparency Mode > HearGuard.

Health features

Sleep tracking with Sleep Patterns, Room noise, light and temperature tracking in the Smart Case1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Sleep Patterns tracking in the Ozlo Sleep app, with environment insights from the Smart Case sensors.

Not available

Fit and durability

4 of 7 differ

Ear tips includediTip sizes supplied with the product, including the pair fitted to the earbuds. Do not list separately sold sizes as included.

0 (extra small), 1 (small), 2 (medium), 3 (large)1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026In the box: 4 sizes of soft silicone tips. Size names are in the hardware overview guide and the Tom's Guide review.4Reviewtomsguide.com/wellness/sleep-tech/ozlo-sleepbuds-2Read 15 October 2026Review: wing tip sizes range from 0 (smallest) to 3 (biggest), size 2 pre-loaded.6Owner's manualozlosleep.com/blogs/user-guide/hardware-overviewRead 15 October 2026Sleepbuds hardware overview guide (dated 4 August 2026): 4 different size silicone tips numbered 0 extra small, 1 small, 2 medium and 3 large. The guide is written for the Ozlo Sleepbuds family and Tom's Guide confirms sizes 0 to 3 for the Sleepbuds 2.

XXS, XS, S, M, L4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026The wearing guide shows ear tip sizes XXS, XS, S, M and L. M tips are pre-installed. Scarbir counts five tip sizes in the box.

Ear tip materials

Silicone1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Soft silicone tips.

Silicone15Reviewscarbir.com/tws/anker-liberty-buds-2-reviewRead 20 October 2026Five sizes of silicone ear tips.

StabilisersiPhysical stabilizing fittings or structures. Stability bands are separate from fins, wings and ear hooks.

Wing tips4Reviewtomsguide.com/wellness/sleep-tech/ozlo-sleepbuds-2Read 15 October 2026Review: custom-fit soft silicone wingtips act as an anchor. Sizes run from 0 to 3, with size 2 fitted.

Fins4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Ear fins in sizes 0, 1 and 2. Size 1 is pre-installed. Scarbir calls them ear wings and counts three sizes.

Ear tip fit test

Not available

Yes4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026The wearing guide has a Fit Test in the app under Settings.

Dust and water rating, buds

IPX41Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Sleepbuds offer protection against dust, sweat and light rain (IPX4). No dust rating is given, so the rating is IPX4.

IP554Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: IP55 for the earbuds. The soundcore service page lists IPX55. The manual figure is stored. Scarbir also says IP55. The case has no rating.

Dust and water rating, case

Not available

Not available

Water resistance depth

Not available

Not available

Software

2 of 6 differ

Companion app

Ozlo Sleep app1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Ozlo Sleep App, iOS and Android.

soundcore4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026The manual and the FAQ name the soundcore app. The earbuds appear as Anker Liberty Buds 2 over Bluetooth.

App platforms

Android, iOS1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Ozlo Sleep App for iOS and Android. Android 12 or later, iOS 17 or later.

Android, iOS13Maker product pageservice.soundcore.com/article-description/How-to-Connect-the-soundcore-App-and-Update-Firmware-for-Anker-Liberty-Buds-2Read 20 October 2026The soundcore app runs on iOS 13 or later and on Android.

User firmware updates

Yes13Maker product pageozlosleep.com/blogs/release-notes/tagged/sleepbudsRead 21 October 2026Release notes list Sleepbuds 2 firmware 02.11.2606025 for the Smart Case, both earbuds and the Bluetooth module, with an Update with Web App button. The iOS app note mentions faster firmware update downloads. The Ozlo site also links a Sleepbuds Updater.

Yes4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Firmware update section in the manual.13Maker product pageservice.soundcore.com/article-description/How-to-Connect-the-soundcore-App-and-Update-Firmware-for-Anker-Liberty-Buds-2Read 20 October 2026Firmware updates are installed from the soundcore app with the earbuds in the case.

Finding network

Not available

Not available

Precision findingiUWB in the case

Not available

Not available

Live translation

Not available

Yes4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026AI Translation section: real-time and face-to-face translation in the soundcore app.

Dimensions and weight

4 of 4 differ

Weight per budiMass of one earbud. Tip size and approximate values belong in the source note. Do not store pair or case-inclusive mass.

1.6g(0.1 oz)1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Tech specifications: 0.06 oz (1.6 g each), without the silicone tip.

4.7g(0.2 oz)1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026At just 4.7 g. TechRadar says 4.7 g each. Tip size is not stated.14Press articletechradar.com/audio/earbuds-airpods/my-favorite-earbuds-of-the-year-just-got-an-open-ear-makeover-as-this-top-cheap-headphone-brand-debuts-7-new-modelsRead 20 October 2026Weigh 4.7 g each.

Bud dimensionsiDimensions of one earbud on the explicitly identified width, height and depth axes. An unlabeled tuple cannot establish those axes.

Width17Height11Depth12mm(0.7 × 0.4 × 0.5 in)1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Tech specifications, earbuds without silicone tip: height 11 mm, width 17 mm, depth 12 mm. Axes are labelled by the maker.

Not available

Case weightiCharging case mass excluding earbuds. Case-inclusive product mass does not qualify unless the source explicitly gives the empty-case figure.

96g(3.4 oz)1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Smart Case without Sleepbuds inside: 3.5 oz (96 g).

Not available

Case dimensionsiCharging-case width, height and depth on explicitly identified source axes. Report conflicting axis labels rather than reorder a tuple by appearance.

Width78Height78Depth27mm(3.1 × 3.1 × 1.1 in)1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Smart Case: height 78 mm, width 78 mm, depth 27 mm. Axes are labelled by the maker.

Not available

Certifications

2 of 3 differ

Hi-Res AudioiThe Japan Audio Society logos. Hi-Res Audio Wireless is also written Hi-Res Wireless Audio.

Not available

Hi-Res Audio Wireless1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026The Hi-Res Audio Wireless logo is on the US store listing images next to the LDAC logo.

Communication certifications

Not available

Not available

FCC IDs

2BAGA010021L, 2BAGA01002114Regulatory filingfccid.io/2BAGA010021LRead 21 October 2026FCC grant 2BAGA010021L for the Sleepbuds earbuds, model 010021L, applicant Drowsy Digital Inc (the company named in the Ozlo site copyright), granted 2026-05-22. Product code 010021 matches the Sleepbuds 2 SKU 010021C01WW01. The first generation grant is 2BAGA010011L. The case grant 2BAGA010021 is the second entry.15Regulatory filingfccid.io/2BAGA010021Read 21 October 2026FCC grant 2BAGA010021 for the Charging Case, model 010021, applicant Drowsy Digital Inc, granted 2026-05-22. The SAR report lists a 75 x 75 x 25 mm case body. The maker states 78 x 78 x 27 mm.

Not available

Other certifications

Not available

TÜV Rheinland Comfortable Fit1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026TÜV Rheinland Comfortable Fit badge on the listing images. The certificate ID on the badge is 0217010962.

In the box

2 of 2 differ

In the box

Sleepbuds 2 earbuds, Smart Case (charging and storage case), 4 sizes of soft silicone tips, Charging cable, Quick Start Guide1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Included in the box: Ozlo Sleepbuds, charging and storage case, 4 sizes of soft silicone tips, charging cable.12Owner's manualozlosleep.com/blogs/blogs/sleepbuds-2-guideRead 21 October 2026Section 1 Unboxing: Sleepbuds 2, Smart Charging Case, USB-C charging cable, four sizes of silicone ear tips and Quick Start Guide.

Earbuds, Charging case, Ear tips in 5 sizes, Ear fins in 3 sizes, Charging cable, User manual4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026The manual refers to the provided charging cable and the ear tips and ear fins. The full box list is from Scarbir. The cable type is not stated.15Reviewscarbir.com/tws/anker-liberty-buds-2-reviewRead 20 October 2026Review says the box has 5 sets of ear tips, 3 sets of ear wings and an English manual. The earbuds and case are implied.

Cables included

AOzlo Sleepbuds 2

Type	Count
USB-C	1

Source12Owner's manualozlosleep.com/blogs/blogs/sleepbuds-2-guideRead 21 October 2026Section 1 Unboxing: one USB-C charging cable. No length or other connector is stated.

Bsoundcore Liberty Buds 2

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Links

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Product page

ozlosleep.com/products/sleepbuds1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026

us.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-calls1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026

Spec sheet

Not available

service.soundcore.com/product-description/a08e200000d1QBkAAM5Maker product pageservice.soundcore.com/product-description/a08e200000d1QBkAAMRead 20 October 2026The soundcore service product page for Anker Liberty Buds 2 lists Bluetooth 6.1, codecs, IPX55, battery capacity and battery life.

Manual

ozlosleep.com/blogs/blogs/sleepbuds-2-guide12Owner's manualozlosleep.com/blogs/blogs/sleepbuds-2-guideRead 21 October 2026Ozlo Complete Guide for Sleepbuds 2: unboxing, setup, Smart Case button, sleep modes and care. No PDF manual was found.

salesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdf4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026English user guide D1206, 12 pages, created 18 September 2026.

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

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Warranty

1 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026FAQ: Ozlo Sleepbuds come with a 1-year warranty. In the EU and UK, that is extended to two years. The US term is stored.

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Both are also in the API. Back to all earbuds.